Question

Find f'(x) f(x)=2x^3(x^2-7)

Answer 1

2x^(3)(x^(2)-7)

Multiply 2x^(3) by each term inside the parentheses.
2x^(5)-14x^(3)

The derivative of 2x^(3)(x^(2)-7) is
10x^(4)-42x^(2)

Answer 2

-> f'(x) = 10x^4 - 42x^2